Vachon François, Tremblay Sébastien, Jones Dylan M
School of Psychology, Universite of Laval, Québec, Québec, Canada.
J Exp Psychol Hum Percept Perform. 2007 Apr;33(2):330-47. doi: 10.1037/0096-1523.33.2.330.
When two visual targets, Target 1 (T1) and Target 2 (T2), are presented among a rapid sequence of distractors, processing of T1 produces an attentional blink. Typically, processing of T2 is markedly impaired, except when T1 and T2 are adjacent (Lag 1 sparing). However, if a shift of task set--a change in task requirements from T1 to T2--occurs, this sparing is reduced substantially. With a semantic priming technique, in which T1 could be either related or unrelated to T2, the priming of T2 by T1 diminished markedly at Lag 1, when the transition between T1 and T2 involved a switch in either location (Experiments 1 and 2) or task (Experiment 3), but remained unaffected at other lags. These results suggest that perceptual processing of T2 cannot be carried out in parallel with task-set reconfiguration.
当两个视觉目标，即目标1（T1）和目标2（T2），在一系列快速呈现的干扰物中呈现时，对T1的加工会产生注意瞬脱。通常情况下，对T2的加工会受到显著损害，除非T1和T2相邻（滞后1时幸免）。然而，如果发生任务集转换——从T1到T2的任务要求发生变化——这种幸免现象会大幅减少。采用语义启动技术，其中T1与T2可能相关也可能不相关，当T1和T2之间的转换涉及位置（实验1和2）或任务（实验3）的切换时，T1对T2的启动在滞后1时显著减弱，但在其他滞后时不受影响。这些结果表明，对T2的知觉加工不能与任务集重新配置并行进行。
